Puncture-proof casing.



W. M. ENGLISH & H. M. LIGHTENSTEIN.

PUNGTURE PROOF CASING.

APPLICATION FILED OUT. 10, 1908.

Patented. Mar. 15, 1910.

INVENTORS} ATTORNEY ber. Over said layer is a compound layer -Over said compound layer is a layer 11 of provideacasing which will be substantially pound layers.

mm w s r WILLIAM M. ENGLISlI, 0F SA USALITO, AND HARRY M. LIGHTENSTEIN, OF SAN" FRABFGISCO, CALIFORNIA.

IPUIIOTURE-PROOF CASING.

enema.

Specification of Letters Patent. Patented Man. 15, 191(1 Application filed October 10, 1908. Serial No. 457,175.

To allwhdm 'it may concern: 1

Be it known that we, WILLIAM M. ENG- LIEiH and HARRY M. LIoHTnNsrnm, citizens or the United States, residing, respectively, at Sausalito, in the county of Marin, and San Francisco, in the county of San Francisco, State of- California, have invented certain new and useful Improvements inPuncture-Proof Casings, of which the following is a specification.

The object of the present invention is to proof against punctures, while yet sufficiently resilient for the purpose desired.

In the accompanying drawing, Figure lis a tire formed in accordance with our inventionyFig. 2 is a broken horizontal section of the same taken above either of the com- Referring to the drawing, 1 indicates the usual inner tube,and 2 indicates the outer tube orcasing. Around the inner tube is a layer 3 of rawhide. Around said layer 3' of rawhide are three suctiessive layers a, 5, 6, of canvas cemented by, or embedded in, rubof which the inner and outer layer sections 7,8,Iare ofcanvasyand the intermediate layer 9 is' of rawhide' These three layers are firmly united b small staples or clench nails 10, of a ma eable iron, the ends of which are clenched into the inner section 7 of the compound la er. These staples are set together so closey impossible fora nai or similar object to penetrate the compound layer thus formed.

that it is practically are three layers cemented by, or emrubber. Over the latter 13, 14, 15, of canvas bedded in, rubber. 0nd compound layer consisting of inner and outer layers 17, 18, of canvas, and an intermediate layer 19 of rawhide, which layers are firmly united by staples 20 in the same manner as the inner compound layer. The edges of the outer: compound layer are chamfered. Over the flatter-compound layer is theouter casing or tread 2 in which there are embedded two layers 22, 23, of canvas.

In the place of or 1n addition to rawhide anyd known gum or vegetable fibermay be use An inferior form of the invention may be obtained by omitting one of the compound layers; but, in any case, the clench nails are set so closely together as to prevent penetration by any sharp object. The rawhide greatly strengthens the tire and prevents it bursting.

We cla1m:--

Over the latter is a sec- I.

In a puncture proof casing, a compdund In testimony whereof we have hereunto,-

set our hands in the scribing witnesses.

WILLIAMM. ENGLISH. HARRY'M. LIOHTENSTEIN. Witnesses:

FRANCIS M. WRIGHT, D. B. RICHARDS.

presence of two subprevent penestantially as. 

